Vu added that the Vietnamese government is very concerned concerned over possible new outbreaks tied to visitors from abroad.
The country on Tuesday reported its first domestic virus case since March 25, after a hotel worker tested positive following contact with 11 quarantined visitors from India.
And Vietnam recorded another 45 new cases of Covid-19 infection on Thursday (April 29) night, including six locally transmitted and 39 imported, raising the total confirmed cases in the country to 2,910, according to the country's Ministry of Health. The total number reported was among highest reported in months.
The domestic cases included a local man who recently returned from Japan and finished a 14-day quarantine before testing positive for the coronavirus, as well as five of his contacts. Relevant authorities are urgently conducting antiseptic measures and contact tracing upon the new development of the pandemic.
The imported cases were foreign experts and Vietnamese citizens who recently entered the country from abroad and were quarantined upon arrival, said the ministry.
As many as 2,516 patients have recovered as of Thursday, the ministry said, adding that over 38,500 people are being quarantined and monitored.
Vietnam on Wednesday (Apr 28) also warned against mass gatherings ahead of long public holidays this weekend and said it would speed up its vaccine rollout amid a worsening coronavirus situation among its neighbours, reported Reuters.
"A new Covid-19 outbreak is threatening to happen, especially during the upcoming holidays," the health ministry said in a statement.
It called for "unanimity and determination" among the public to keep the virus at bay.
Vietnam has been widely praised for its record in containing its outbreaks quickly through targeted mass testing and a strict, centralised quarantine programme.
That has helped keep its case tally to 2,865, with only 35 deaths reported since the pandemic began, one of the best records in Asia.
"For the sake of the country, of the community and of the people, each citizen should be unanimously determined to hold on to our success in preventing and fighting against Covid-19," the statement said.